HIGH STRENGTH CEMENTED CARBIDE AND HIGH STRENGTH SINGLE CRYSTAL CASTING

摘要

PURPOSE: To provide a cemented carbide combining creep fracture strength more excellent than that of the existing single crystal alloys and oxidation resistance on a good class among the existing single crystal alloys and to provide single crystal cast parts for blades and nozzles using the same. ;CONSTITUTION: This high strength cemented carbide is the one contg., by weight, 4.5 to 10% Cr, 4.5 to 6.5% Al, 3 to 9% W, 3 to 9% Ta, 3 to 9% Mo, 0.1 to 3% Co, 0.1 to 4% Re, ≤0.3% Hf, and the balance Ni with inevitable impurities, and the single crystal casting tar blades and nozzles using the same is produced.;COPYRIGHT: (C)1995,JPO